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Finding the Fourth Proportional to 891,812.60, 1,337,718.90 and 418,545.80

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Solution

The fourth proportional to 891,812.60, 1,337,718.90 and 418,545.80 is: 627,818.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,812.60 : 1,337,718.90 = 418,545.80 : x
  2. Step 2: Convert to fraction form
    891,812.60/1,337,718.90 = 418,545.80/x
  3. Step 3: Cross multiply
    891,812.60x = 1,337,718.90 × 418,545.80
  4. Step 4: Simplify right side
    891,812.60x = 559,896,627,175.62
  5. Step 5: Solve for x
    x = 559,896,627,175.62/891,812.60
  6. Step 6: Final answer
    x = 627,818.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.